A-frame double-girder gantry crane for engineering

The Weihua A-frame double-girder gantry crane for engineering adopts a truss structure, featuring low wind resistance, light deadweight, low wheel load, and reliable performance. With its robust construction, smooth operation, and strong wind resistance, it is widely used for loading, unloading, and lifting operations at construction sites for highways, bridges, power plants, and more.

Specifications

Lifting capacity: 40-100t
Span: 20-40m
Lifting height: 9-12m
Working class: A5

Introduction
Application Cases
Brand Advantages
Related Products
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Introduction

The A-frame double-girder gantry crane for construction projects adopts a truss structure, featuring low wind resistance, light deadweight, low wheel load, and reliable performance. With its robust construction, smooth operation, and strong wind resistance, it is an indispensable lifting and handling equipment in major infrastructure projects such as highways, railway bridges, and water conservancy hubs.

Advantages & Features

Robust Structure, Strong Wind Resistance

The unique truss or box-type structural design effectively reduces deadweight while meeting超大 span requirements, and possesses excellent wind stability, making it very suitable for outdoor高空作业 environments.

Smooth Operation, Precise Positioning

The crane travel mechanism adopts multi-wheel drive and soft start technology, effectively reducing impact. Combined with Weihua’s world-leading electrical anti-sway and automatic positioning control system, it enables平稳 lifting of heavy components and millimeter-level precise alignment, ensuring construction safety and quality.

Safe, Reliable, and Fully Protected

The overall design incorporates a comprehensive safety concept, with sufficient safety margins for key structures. The operator’s cab is designed with a focus on personnel safety and operational comfort. Additionally, safety devices such as overload limiters and multiple limit switches can be equipped.

Strong Customization Capability

Weihua can provide customized solutions for road and bridge gantry cranes according to specific project requirements for span, lifting height, capacity, and construction processes.

Structural Composition

Weihua A-frame double-girder gantry crane for construction projects adopts a classic box-type or triangular truss structural design, achieving lightweight construction while ensuring high structural strength and good wind resistance. It mainly consists of the following systems:

Gantry Structure: Includes the main girder, legs, upper/lower end beams, and traveling bogies. The main girder often uses a triangular truss structure, offering high strength, light weight, and strong wind resistance. Legs can be box-type or steel pipe structures to ensure overall stability.
Hoisting Mechanism: The core is the trolley system, featuring a compact structure and light deadweight. Specifically designed for lifting large, heavy components like预制 beams and bridge decks, ensuring smooth and precise lifting.
Crane Travel Mechanism: Drives the entire crane longitudinally along rails laid on piers or the ground, operating smoothly and adapting to the complex conditions of construction sites.
Trolley Travel Mechanism: Drives the lifting trolley transversely along the main girder rails, enabling precise positioning of the load within the work area.
Operator’s Cab and Control System: Uses a closed operator’s cab, providing a safe and comfortable environment for the operator, equipped with adjustable seats, insulated flooring, tempered glass, and fire extinguishers. The control system ensures coordinated operation of all mechanisms and can integrate advanced anti-sway and positioning technologies.

Specifications

Item		Specification
Lifting Capacity (t)		40~100
Span (m)		20~40
Lifting Height (m)		9~12
	Main Hook	0.8~1
Speed (m/min)	Trolley Travel	10
	Crane Travel	13~15
Working Class		A5

Applications

Weihua A-frame double-girder gantry crane for construction projects primarily serves the fields of national infrastructure construction and heavy equipment hoisting.

Highway and Railway Bridge Construction: Used for hoisting and erecting预制 beams, as well as installing large bridge deck components.
Water Conservancy and Hydropower Projects: Serves the hoisting of dam gates, large pipelines, and other heavy hydraulic structures.
Large Building and Venue Construction: Used for lifting large steel structures, precast concrete components, etc.
Heavy Equipment Manufacturing and Installation: For handling and assembling large components in heavy machinery factories or equipment installation sites.

Application Cases

A super-large gantry crane was specially designed and manufactured for Erzhong Group (Deyang).

New Chinese-Style Crane Project Case

A 75-ton crane was supplied to the Hainan Satellite Launch Site.

Weihua New Explosion-Proof Electric Hoist

Shore-based container crane manufactured for Zhejiang Petrochemical

Brand Advantages

Strong capabilities

A leading enterprise in China's crane industry, with an annual production capacity exceeding 100,000 sets of lifting equipment. Its smart factory ranks among the industry's top in scale and production capacity. In 2023, order volume surpassed 4 billion yuan, with its market coverage and delivery capabilities widely recognized.

Rich experience

With over six decades of deep expertise in the lifting equipment sector, our service network spans more than 170 countries worldwide. Having completed over 500,000 projects across diverse complex industrial scenarios, we have accumulated extensive application experience and solutions.

Qualifications and Honors

The company operates a National-level Enterprise Technology Center and holds over 1,800 authorized patents. It has received 135 provincial-level and higher science and technology awards, led or participated in the formulation of multiple international/national standards, and earned certifications including the National Manufacturing Single Champion title.

Quality Assurance

Strictly implementing the ISO international quality system, with automation rates exceeding 95% in critical processes. Pioneering the “New Chinese-style” structural optimization technology, significantly reducing equipment weight and energy consumption. Rigorous quality control throughout the entire production process ensures safety and reliability.

Technological Innovation

Annual R&D investment accounts for 4%-6% of revenue, with an academician-led technical team of over 1,200 members. Breakthroughs in key bottlenecks such as millimeter-level anti-sway technology (≤2mm) continuously drive the iteration of intelligent, lightweight, and low-carbon technologies.

After-sales Service

With over 300 service centers worldwide, we guarantee 24-hour rapid response. Equipped with the “Crane Butler” intelligent operation and maintenance system, we provide remote diagnostics and preventive maintenance, ensuring full lifecycle service support for your operations.

A-frame double-girder gantry crane for engineering

Advantages & Features

Structural Composition

Specifications

Applications

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